Improvement in locomotives



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Locomotives.

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Dnen m' AM. PHoro-urf/UGHAPHI@ co. 1w( osamvsfs PRocEss) UNITED STATES WILLIAM S. HUDSON, OF PATERSON, NEW JERSEY..

IMPROVEMENT IN LOCOMOTIVES.

Specication forming part of Letters Patent No. 136,729, dated March 11, 1873.

-provided with suitable valve-gear and with means for admitting steam directly to each when required for starting the train or for ascending inclines. But I ada-pt the engine for more economical working under ordinary conditions by taking the live steam from the boiler directly only into one cylinder, and eX- hausting it therefrom into a chamber surrounded by the products 0f combustion in the smoke-box, from whence it is led in a dried and more or less superheated condition into the other cylinder. The cylinders are preferably different in size, the one which ordinarily receives the live steam being only about threefourths the diameter of the other.

' The following is a description of what I consider the best means of carrying out the invention.

The accompanying drawing forms a part of this specification.

Figure l is a cross-section, and Fig. 2 is a longitudinal section through the front part of a locomotive.

The drawing represents the novel parts with so much of the ordinary parts as is necessary to indicate their relation thereto.

Similar letters of reference indicate corresponding parts in both the figures. Y

A is the front end of the boiler, B the smoke-pipe, and C the main steam-pipe conveying steam to the cylinders D. The latter will, when it is necessary to distinguish them,

be referred to as D1 D2, the smaller being marked D1 and the larger D2. E is a pipe, which may be of smaller diameter than the main pipe C, provided with a valve, c, controlled by the engineer from the foot-board. O11 opening this valve c the live steam is admittedI directly to the cylinder D2; when it is closed the live steam is admitted only to the cylinder D1. G is a pipe leading the exhaust from the cylinder D1V into a broad, at vessel, H, suspended in the smoke-box and thickly perforated with thimbles or short tubes h. This serves as a drier and superheater. After passing through this the steam is conducted bythe pipe I to the cylinder D2. I pro vide one or more partial partitions, h', in the superheater H, which compels the steam to eirculateraetively through all parts and absorb a large amount of heat from the extended heated surface. The steam discharged from the cylinder D2 may be employed' to increase the draft, as usual. The valves of both cylinders may be Worked by the link-motion or any other suitable means.

My invention in nowise interferes with the action of all the ordinary improvements and variations in the construction and arrangement of the locomotive. I propose to employ my improvement in connection with all the ordinary or suitable styles of construction.

The economy of fuel due to the working of steam from one cylinder into the other has been long known 5 but I am not aware that any have before so constructed and arranged a locomotive as to adapt it to this style of working. y

"Some portions of my invention may be employed without the others with some'degree of success; but I prefer the whole, combined and arranged as shown.

I claim as my invention- 1. The superheatingvessel H, in the form of a broadly-extended diaphragm, perforated by tubes h and provided with one or more partial partitions, h', arranged asherein specited.

2. The arrangement, in the smoke-box of a l locomotive, of a drying and superheating vessel, with connections to the two cylinders, the whole so operated that the live steam shall be received from the boiler into one cylinder and exhausted therefrom into the other cylininder through the said superheater, as herein specified. A

3. A locomotive having a secondary livesteam pipe, E, leading to the second cylinder D2 and controlling-valve c, with means for op- Verating from the foot-board, in combination with the main steam-pipe (l leading to the other cylinder D1, and arranged for joint operation relatively to the boiler A, and the means for exhausting from the one cylinder into thev other and superheating, as herein specified.

In testimony whereof I have hereunto set my hand this 6th day of December, 1872, in the presence of two subscribing witnesses.

WM. S. HUDSON.

Witnesses z WM. (l. DEY, ARNOLD HRMANN. 

